New efficient material for heat pumps may considerably reduce energy use for cooling and heating

24 June 2015 by Delft Energy Initiative

In his PhD-research TU Delfts Martijn de Lange (Applied Sciences) has successfully developed a novel class of materials, i.e. Metal-Organic Frameworks (MOFs), that are extremely suited for application in heat pumps and chillers. They have a superior performance over commercial sorbents and may potentially contribute to considerable energy savings worldwide.

Globally about 33 % of the energy consumption is used for heating and cooling of e.g. houses and buildings. Adsorption driven heat pumps and chillers are very well suited to reduce this energy consumption and can even use low-grade waste heat or sustainable solar energy in combination with environmentally benign working fluids (e.g. water).

 

Metal-Organic Framework (MOF)

MOFs are porous crystalline materials built up from inorganic clusters connected by organic ligands in 1, 2 or 3 dimensions, and display a rich variety of topologies and can be functionalized in many different ways. They offer the materials scientist an outstanding platform to design new materials with superior properties.

The described research has identified MOFs with sufficient stability against water, that show the desired adsorption behavior of water. These MOF-water pairs possess higher energy efficiency and working capacity than benchmark materials and may operate with a lower driving temperature.  The selected MOFs can be coated (without binder) directly on heat-exchanger surfaces for a fast response.

For further information please visit the Chem-E website.

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